Choose the best answer amongA, B, C, or D which has the same meaning with the original sentence:
He is short-sighted. Therefore, he has to wear the glasses.
A. If he isn’t short-sighted, he won’t have to wear the glasses.
B. If he hadn’t been short-sighted, he wouldn’t have had to wear the glasses.
C. If he weren’t short-sighted, he wouldn’t have to wear the glasses.
D. Should he not be short-sighted, he won’t have to wear the glasses.
Đáp án là C. Ta thấy câu đã cho chia ở hiện tại đơn giản => Dùng điều kiện loại II